ISO 484-2-1981 rus PDF

Full title and description

Shipbuilding — Ship screw propellers — Manufacturing tolerances — Part 2: Propellers of diameter between 0,80 and 2,50 m inclusive. Applies to monobloc, built‑up and controllable‑pitch propellers and defines dimensional and manufacturing tolerances, measurement methods for pitch and section thickness, and accuracy classes. (Russian-language editions/translations have been issued for this standard.)

Abstract

This part of ISO 484 specifies manufacturing tolerances and measurement methods for ship screw propellers whose diameters lie between 0.80 m and 2.50 m inclusive. It gives tolerance tables, defines accuracy classes and describes procedures for measuring pitch and section thickness for monobloc, built‑up and controllable‑pitch propellers.

General information

• Status: Withdrawn / superseded.
• Publication date: August 1981 (1981‑08).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 47.020.20 (Marine engines and propulsion systems).
• Edition / version: Edition 1 (1981).
• Number of pages: 6 (original ISO metadata).

Information above is taken from ISO bibliographic records and national catalogues; the 1981 part‑2 edition has been withdrawn and a revised ISO 484‑2:2015 edition is available.

Scope

Specifies manufacturing tolerances for ship screw propellers with diameters from 0.80 m up to and including 2.50 m. The standard covers dimensional tolerances, definitions of accuracy classes, and recommended methods for measuring pitch and section thickness; it is intended to apply to monobloc (one‑piece), built‑up and controllable‑pitch propellers used in merchant and naval shipbuilding.

Key topics and requirements

• Definition of dimensional tolerances for blades, boss and overall diameter for propellers 0.80–2.50 m.
• Classification into accuracy/tolerance classes and specification of allowable deviations.
• Measurement methods for pitch and section thickness (procedures and reference sections).
• Application to monobloc, built‑up and controllable‑pitch propellers and notes on customer/designer discretion for permitted deviations.
• Reference tables and diagrams to support inspection and acceptance testing.

Typical use and users

Used by propeller manufacturers, shipyards, naval architects, marine engineers, classification societies and procurement/specification teams when defining allowable dimensional tolerances, inspection acceptance criteria and manufacturing/quality control procedures for propellers in the specified diameter range. National standards bodies and translation publishers may issue localized language versions (including Russian).

Related standards

Historical precursor ISO/R 484:1966; related Part 1 (other diameter ranges) and the revised ISO 484‑2:2015 which replaces the 1981 edition. Equivalent/nationally adopted standards (for example certain JIS editions) may align with or reference ISO 484 family requirements.

Keywords

ship screw propeller, propeller tolerances, manufacturing tolerances, propeller pitch measurement, propeller section thickness, monobloc propeller, controllable‑pitch propeller, ISO 484‑2, marine propulsion.

FAQ

Q: What is this standard?

A: ISO 484‑2:1981 is an International Organization for Standardization document that specified manufacturing tolerances, accuracy classes and measurement methods for ship screw propellers with diameters between 0.80 m and 2.50 m.

Q: What does it cover?

A: It covers dimensional tolerances for blades and boss, procedures for measuring pitch and section thickness, tolerance/accuracy classes and notes on application to monobloc, built‑up and controllable‑pitch propellers.

Q: Who typically uses it?

A: Propeller manufacturers, shipyards, naval architects, marine engineers, class societies and procurement/specification teams use the standard to define and verify acceptable manufacturing tolerances and inspection methods.

Q: Is it current or superseded?

A: The 1981 edition has been withdrawn and superseded by ISO 484‑2:2015 (the revised part‑2 published in 2015). Users should refer to the 2015 edition for the current requirements.

Q: Is it part of a series?

A: Yes — ISO 484 has multiple parts (historically and by diameter range). ISO/R 484:1966 was an earlier related publication; the part‑structure (for different diameter ranges) and later revisions form the ISO 484 series.

Q: What are the key keywords?

A: ship screw propellers; manufacturing tolerances; pitch measurement; section thickness; accuracy classes; monobloc; built‑up; controllable‑pitch; propeller diameter 0.80–2.50 m.